Robinson R66 Service Letter SL-03A

21 Nov, 11, Source: Robinson

DATE: 07 September 2011
REV A: 30 September 2011

TO: R66 owners, operators, and maintenance personnel

SUBJECT: Clutch Assembly Retaining Bolt Replacement

BACKGROUND: R66 helicopters S/N 0001 thru 0031, and 0033 thru 0040 clutch assembly retaining bolt may be longer than necessary. At next clutch removal, RHC recommends replacing a NAS6604-57 bolt with a NAS6604-56 bolt and, if required, replacing the thread insert.

Robinson R66 Service Letter SL-03A


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